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love history [14]
2 years ago
9

What are two scientific ideas that have changed throughout and why they have changed?

Biology
1 answer:
enyata [817]2 years ago
8 0
One is that the earth is shaped as a circle and two is that it is shaped as a square
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What is the term used for the elements and compounds before a chemical reaction takes place?
alexandr1967 [171]

Explanation:

Before a chemical reaction, the elements and compounds which are about to take part in the reaction are known as reactants.

And, when the chemical reaction takes place between the given elements and compounds then they change into products.

For example, we take sodium and chlorine elements and before any chemical reaction they are the reactants.

But when a chemical reaction takes place between sodium and chlorine then it results into the formation of sodium chloride which is the product.

7 0
3 years ago
(WILL GIVE BRAINLIEST) <br> How do deep ocean currents form? <br> Answer choices in screenshot
enyata [817]
C Is the answer! Good luck
4 0
2 years ago
Read 2 more answers
Explain how both genes, and the environment determine your risk of developing cancer. Please
solmaris [256]

Answer:

The phenotype is the result of the interaction between the genes (i.e., genotype) and environmental factors.

Explanation:

Cancer is a disease caused by abnormal expression of genes involved in the cell cycle, mitosis, DNA replication, etc. Moreover, the abnormal gene expression may be associated with environmental factors such as smoking, alcohol consumption, etc.

5 0
2 years ago
If the dna of a certain organism has guanine as 30% of its bases, then what percentage of its bases are adenine?
serious [3.7K]
G always pairs with C...So, if there is 30% G, then there's 30% C...which is 60%...that leaves 40% A+T - and you have to split this up too - so 20% Thymine (T) and 20% Adenine (A).
3 0
3 years ago
using your knowledge of skeletons and land adaptations, put the subgroups of chordate animals in their order of complexity (rept
dangina [55]

Bony fish, amphibian, reptile, bird, and mammal.

define amphibian ?

Amphibians are four-limbed, ectothermic animals that belong to the class Amphibia. The phylum Lissamphibia includes every extant amphibian. They live in a broad range of habitats, with the majority of species being found in freshwater aquatic, terrestrial, fossorial, or arboreal settings. Therefore, amphibians normally begin their lives as aquatic larvae, but certain species have evolved behavioural adaptations to get around this.

The young typically transition from a larval stage with gills to an adult form with lungs. Some tiny terrestrial salamanders and frogs rely solely on their skin for respiration, whereas amphibians use their skin as a supplementary respiratory surface. Although they resemble lizards on the surface, reptiles, like mammals and birds, are amniotes and do not need bodies of water to survive.

Bony fish, amphibian, reptile, bird, and mammal.

To learn more about amphibian follow the given link: brainly.com/question/2292336

#SPJ4

5 0
1 year ago
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